じゃろうが

isn't it?

→ だ
phrase Rare #42,018
isn't it? A dialectal or old-fashioned emphatic sentence ending, equivalent to だろうが. It can insist that something is obvious or challenge the listener to agree, often with an irritated or forceful tone.
JA: わしが言った通りじゃろうが。
EN: Just as I told you, isn't it?

同じことじゃろうが

It's the same thing, isn't it?

— 風の谷のナウシカ (1984)

意気地のないじゃろうが

That's a pretty spineless thing to say, isn't it?

— 東京物語 (1953)